diff --git a/plots/treemap-basic/specification.md b/plots/treemap-basic/specification.md
index 761ee7b91c..63d559beeb 100644
--- a/plots/treemap-basic/specification.md
+++ b/plots/treemap-basic/specification.md
@@ -17,6 +17,7 @@ A treemap displaying hierarchical data as nested rectangles, where each rectangl
 - `subcategory` (string) - optional sub-category for nested hierarchy
 - `value` (numeric) - size/magnitude determining each rectangle's area
 - Size: 5-50 items
+- Example: Company expense breakdown by department and cost center, or product catalog by category and subcategory with sales volume
 
 ## Notes
 
diff --git a/plots/treemap-basic/specification.yaml b/plots/treemap-basic/specification.yaml
index ea9535d168..f4cfe2aaa3 100644
--- a/plots/treemap-basic/specification.yaml
+++ b/plots/treemap-basic/specification.yaml
@@ -6,7 +6,7 @@ title: Basic Treemap
 
 # Specification tracking
 created: 2025-12-14T11:15:11Z
-updated: 2025-12-14T11:15:11Z
+updated: 2026-05-05T22:26:26Z
 issue: 766
 suggested: MarkusNeusinger